Which is not an example of a technological achievement of the song dynasty? a. magnetic compass for maritime navigation b. waterwheel for irrigation c. movable type

The correct answer is : b. Waterwheel for irrigation.

The first clear description of a waterwheel for irrigation was given by Roman architect Vitruvio around 4000 B.C during Roman times. Although some texts mention Mesopotamia and Alexandria as its invention sites.

Hydraulic energy usage dates from the Greeks, whom employed the waterwheel invented by Philo of Byzantium in the third century B.C. The Egyptians and Romans afterwards, which were great voyagers and architects, improved the waterwheel and conduits, needing human strength to turn the wheel.

Roman architect Marco Vitruvio discover the horizontal axis waterwheel, which was used mainly for crop irrigation, to supply water to villagers and to grind grains.

the answer to your question is:

strong-mayor system

well this is going to be a long answer lol ok so the visigoths were a branch of the goths who frequently raided rome, uh the hunas attacked the guptas a lot and weakened them, uuhm of course the romans used math and science in there every day lives i mean they had a whole empire to run, and rome was split into east and west by a general named diocletian. hope this you! : )